When discussing precedence of honoring one's Rabbi vs one's father, Poskim (see "Psakim and Teshuvos" by Aharon Katz on יו"ד ר"מ for the list) note that if the father (or someone else) pays the Rabbi, the former gets all the Rabbi's honor.
We know, however, that a Rabbi is obligated to teach for free anyway, the father cannot pay him the fee of teaching, but only a compensation for possible loss of a "real work income" (ha-ha-ha). Maybe the Rabbi becomes a Shaliah?
I was wondering what's the connection?
Also, how does it apply to the current day Yeshivos, where the Rabbis got paid thru fathers and outside donors - who get the respect?
(Am I limited on how many questions I can ask on one topic in one week?)